Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections

Background: The limited armamentarium against multidrug-resistant Gram-negative bacilli led to the development of a new generation of β-lactam/β-lactamase inhibitor combinations (BL/BLI). Objectives: To evaluate the in vitro activity of ceftazidime/avibactam, ceftolozane/tazobactam, meropenem/vaborb...

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Autores principales: Helio S. Sader, Mariana Castanheira, Leonard R. Duncan, Rodrigo E. Mendes
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:bf9c27dc44894de6a4e64077bcd0288a2021-11-14T04:31:14ZAntimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections1201-971210.1016/j.ijid.2021.10.022https://doaj.org/article/bf9c27dc44894de6a4e64077bcd0288a2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1201971221008092https://doaj.org/toc/1201-9712Background: The limited armamentarium against multidrug-resistant Gram-negative bacilli led to the development of a new generation of β-lactam/β-lactamase inhibitor combinations (BL/BLI). Objectives: To evaluate the in vitro activity of ceftazidime/avibactam, ceftolozane/tazobactam, meropenem/vaborbactam, and imipenem/relebactam against Pseudomonas aeruginosa isolates recovered from patients hospitalized with skin and soft tissue infections (SSTIs) in several countries around the world. Methods: A total of 360 P. aeruginosa isolates were consecutively collected from 47 medical centers located in Western Europe, Eastern Europe, the Asia-Pacific region, and Latin America. Susceptibility testing was performed by broth microdilution method at a monitoring laboratory. EUCAST breakpoints were applied. Results: Ceftazidime/avibactam (98.3% susceptible), ceftolozane/tazobactam (98.6% susceptible), and imipenem/relebactam (98.3% susceptible) were the most active compounds after colistin (100.0% susceptible) and retained activity against isolates nonsusceptible to piperacillin/tazobactam, meropenem, imipenem, and/or ceftazidime. Meropenem-vaborbactam was active against 94.2% of isolates. Ceftazidime/avibactam was the most active BL/BLI against meropenem-nonsusceptible (92.6% susceptible) and imipenem-resistant (93.8% susceptible) isolates, whereas ceftolozane/tazobactam was the most active BL/BLI against piperacillin/tazobactam-resistant (91.1% susceptible) and ceftazidime-resistant (91.7% susceptible) isolates. Conclusions: The recently approved BL/BLIs demonstrated potent activity and broad coverage against contemporary P. aeruginosa isolates from patients with SSTIs.Helio S. SaderMariana CastanheiraLeonard R. DuncanRodrigo E. MendesElsevierarticlePseudomonas aeruginosaceftazidime/avibactamceftolozane/tazobactamimipenem/relebactammeropenem/vaborbactamInfectious and parasitic diseasesRC109-216ENInternational Journal of Infectious Diseases, Vol 113, Iss , Pp 279-281 (2021)
institution DOAJ
collection DOAJ
language EN
topic Pseudomonas aeruginosa
ceftazidime/avibactam
ceftolozane/tazobactam
imipenem/relebactam
meropenem/vaborbactam
Infectious and parasitic diseases
RC109-216
spellingShingle Pseudomonas aeruginosa
ceftazidime/avibactam
ceftolozane/tazobactam
imipenem/relebactam
meropenem/vaborbactam
Infectious and parasitic diseases
RC109-216
Helio S. Sader
Mariana Castanheira
Leonard R. Duncan
Rodrigo E. Mendes
Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
description Background: The limited armamentarium against multidrug-resistant Gram-negative bacilli led to the development of a new generation of β-lactam/β-lactamase inhibitor combinations (BL/BLI). Objectives: To evaluate the in vitro activity of ceftazidime/avibactam, ceftolozane/tazobactam, meropenem/vaborbactam, and imipenem/relebactam against Pseudomonas aeruginosa isolates recovered from patients hospitalized with skin and soft tissue infections (SSTIs) in several countries around the world. Methods: A total of 360 P. aeruginosa isolates were consecutively collected from 47 medical centers located in Western Europe, Eastern Europe, the Asia-Pacific region, and Latin America. Susceptibility testing was performed by broth microdilution method at a monitoring laboratory. EUCAST breakpoints were applied. Results: Ceftazidime/avibactam (98.3% susceptible), ceftolozane/tazobactam (98.6% susceptible), and imipenem/relebactam (98.3% susceptible) were the most active compounds after colistin (100.0% susceptible) and retained activity against isolates nonsusceptible to piperacillin/tazobactam, meropenem, imipenem, and/or ceftazidime. Meropenem-vaborbactam was active against 94.2% of isolates. Ceftazidime/avibactam was the most active BL/BLI against meropenem-nonsusceptible (92.6% susceptible) and imipenem-resistant (93.8% susceptible) isolates, whereas ceftolozane/tazobactam was the most active BL/BLI against piperacillin/tazobactam-resistant (91.1% susceptible) and ceftazidime-resistant (91.7% susceptible) isolates. Conclusions: The recently approved BL/BLIs demonstrated potent activity and broad coverage against contemporary P. aeruginosa isolates from patients with SSTIs.
format article
author Helio S. Sader
Mariana Castanheira
Leonard R. Duncan
Rodrigo E. Mendes
author_facet Helio S. Sader
Mariana Castanheira
Leonard R. Duncan
Rodrigo E. Mendes
author_sort Helio S. Sader
title Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
title_short Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
title_full Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
title_fullStr Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
title_full_unstemmed Antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against Pseudomonas aeruginosa from patients with skin and soft tissue infections
title_sort antimicrobial activities of ceftazidime/avibactam, ceftolozane/tazobactam, imipenem/relebactam, meropenem/vaborbactam, and comparators against pseudomonas aeruginosa from patients with skin and soft tissue infections
publisher Elsevier
publishDate 2021
url https://doaj.org/article/bf9c27dc44894de6a4e64077bcd0288a
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